The preterite died out and the rest of the past tenses merged into one, as imperfect -ábh /aː/ and pluperfect -ar /aː/ were pronounced the same and were given the more regular spelling of -á /aː/. The missing tenses are now compounds similar to French. The auxiliary ar means to have.

The singular forms and the third person plural are identical but each form mutates the following word in a different way. Therefore the pronouns can be left out sometimes (not all consonants undergo all mutations).

Could you potentially detail the effects of the mutations, especially the ways in which they differ from the mutations in Irish?

I would describe this language's mutations as more regular and Romance-y than Irish's. So things like /t̪ˠ/ > /h/ and /d̪ˠ/ > /ɣ/ don't happen. The romlang's lenition actually causes lenition in a Western Romance style (plus additional things like weakening nasals, affricates etc.) while Irish lenition rather turn stops into fricatives. Irish eclipsis/nasalisation lenites voiceless stops and turns voiced stops into nasals while this romlang just does the latter (in addition to /nf/ > /mpf/ > /pf/ and /ns/ > /nts/ > /ts/ which is more German inspired). Then the romlang also has a third mutation which does multiple different things.

I don't know exactly because I seem to have made a mistake. I thought the infinitive of habeō is hábere, not habḗre. So it's not /ˈa.βrə/ > /ˈawr/ > /ˈar/ but something else, probably aver /əˈveː/ or just ver or ér ~ er. This is what I have so far:

A Russian-inspired triconsonantal conlang. An idea I had for some time but always put aside because I didn't like the sound changes.

/ʲi ʲe ʲa ʲu/ <i ye ya yu>
/e~ɨ¹ a~ʌ~ə² u/ <e a~o u>

/m n/
/b p d t g k/
/t͡s t͡ʃ³/
/f v θ ð s z ʃ³ ʒ³ x ɣ⁴/
/l r/

¹ /ɨ/ in unstressed syllables
² /ʌ/ in unstressed syllables followed by an unpalatalised syllable and in front of /l/ [ɫ] and /v/ (written as <o> if /ʌ/ except if part of an infix of a root in the latter two cases), /ə/ if followed by a palatalised syllable
³ palatal if palatalised, retroflex if unpalatalised
⁴ /j/ if palatalised

I thought I'll try ergative-absolutive alignment with this language as well to push my boundaries. The proto-language distinguished past/present and had a habitual tense formed by reduplication of the first syllable. The habitual became the regular present and the old present became the future. Remnants of the reduplication can be seen in the fourth person absolutive. Some of the proto-words:

I made the ergative come from the word for "here" which ultimately was a optional distinction between subject and object. In sentences without an object, the distinction wasn't needed so a galaz was the preferred form for "They see". In sentences with an object, the distinction was kept and became necessary. This enabled a more free word order and caused the language's ergative-absolutive alignment. So a galaz si ("They see you") became replaced by a i galaz si which could now also be said as si galaz a i. However, the SVO was the most common and the subjects became prefixed to the verb. I also have a daughter language in mind which has nominative-accusative alignment and suffixed the subject to the verb together with i all the time.

Edit: Idea: Having the origin of ergative-absolutive alignment from a word like "here" or "this" be an areal feature if I'll ever make a conworld out of this?

Conlanger's block so I came up with a random phonology to try to step out of my box

There's something very pleasing to me about this language's phonology and orthography. I particularly like how the low vowel is nasalized by default, the lack of <k>, and the distribution of geminates.

I like how every monophthong phoneme has at least two orthographic representations, and how unstressed /e o/ merge with /i u/ in certain types of syllables and with /ɛ ɔ/ in others. I'm also pretty intrigued by /x/ <y> and the /x h/ contrast.

There's something very pleasing to me about this language's phonology and orthography. I particularly like how the low vowel is nasalized by default, the lack of <k>, and the distribution of geminates.

Thanks again! My goal with this was to add everything I would normally ugly/disgusting for my own conlangs but I haven't achieved that yet, I like all of these things so far Although it can get pretty keysmash-y sometimes with words like <ggcʲdrq> /ˈŋ̩ːkʲ.dr̩q/.

I like how every monophthong phoneme has at least two orthographic representations, and how unstressed /e o/ merge with /i u/ in certain types of syllables and with /ɛ ɔ/ in others. I'm also pretty intrigued by /x/ <y> and the /x h/ contrast.

Well, most of the representations are just the normal version plus the one with an accent for when the vowel is stressed à la Spanish and Portuguese. /x h/ was something I really wanted for these lang. /h/ is from /f/ like Spanish and /x/ is from earlier /ʝ/ (through /ʝ/ > /ç/ > /x/) which explains the use of <y> for /x/ pretty well I think Compare Latin *fāgea resulting in Spanish <haya> /ˈa.ʝa/ and this romlang's <haya> /ˈha.xə/